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All-optical measurement-based quantum-information processing in quantum dots.

Abstract:

Parity measurements on qubits can generate the entanglement resource necessary for scalable quantum computation. Here we describe a method for fast optical parity measurements on electron spin qubits within coupled quantum dots. The measurement scheme, which can be realized with existing technology, consists of the optical excitation of excitonic states followed by monitored relaxation. Conditional on the observation of a photon, the system is projected into the odd/even-parity subspaces. Our...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
Journal:
Physical review letters
Volume:
97
Issue:
25
Pages:
250504
Publication date:
2006-12-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:cad3bdcb-82cb-469c-9698-92eb5b8e759a
Source identifiers:
6179
Local pid:
pubs:6179
Language:
English

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